loop through your data changing the values
MyRow = 2
Do While Cells(row, 6) <> ""
Cells(MyRow, 7).Value = Cells(MyRow, 9).Value * 0.85
Cells(MyRow, 8).Value = Cells(MyRow, 9).Value * 1.15
row = row + 1
Loop
and then add the new sheet,
Sheets.Add After:=ActiveSheet
ActiveSheet.Range("A1").Select
Sheets("sheet1").Range("A1:AF1262").AdvancedFilter...
otherwise you'll end up with 3000 sheets
or
create the sheet and then loop through your data
adding data to your new worksheet as you go
MyRow = 2
Sheets.Add After:=ActiveSheet
Do While Cells(row, 6) <> ""
Cells(MyRow, 7).Value = Cells(MyRow, 9).Value * 0.85
Cells(MyRow, 8).Value = Cells(MyRow, 9).Value * 1.15
'do other stuff here
row = row + 1
Loop